Card printing machine



1951 D. H. HURLBUT ETAL 2,994,265

CARD PRINTING MACHINE Filed March 25, 1959 2 Sheets-Sheet 1 INYENTURQl70zrsLAs H.HURLBUT.

WILLIAM 1 50017121011.

I l i 32 I 22 M 1951 D. H. HURLBUT ETAL ,994,265

CARD PRINTING MACHINE 2 Sheets-Sheet 2 Filed March 25, 1959 INVENTUR sJJUUELAS H.HURLBUT. WZ LLJAM Z? 50 017mm.

BY W

AT Y.

United States Patent 2,994,265 CARD PRINTING MACHINE Douglas H. Hurlbutand William F. Goodrich, both of Adrian, Mich. Filed Mar. 25, 1959, Ser.No. 801,825 8 Claims. (Cl. 101-269) This invention relates to cardprinting machines and more particularly to a machine of a characterparticularly adapted for use in printing show cards, signs, posters andthe like.

This invention embraces the provision of a card printing machineembodying a manually movable carriage equipped with means formaintaining a selected pressure upon successive sheets of stock, cardsor the like during printing operations in order to attain uniform typeimpression.

An object of the invention is the provision of means in corporated in apressure carriage of a printing machine wherein the position of thepressure roll may be accurately regulated in accordance with thethickness of the stock to be printed in order to obtain uniform typeimpressions on successive sheets or stock.

Another object of the invention is the provision of a movable carriagearranged for traverse over a type-supporting platen or bed, the carriageincorporating an eccentrically mounted pressure roll in combination withmanually operable means for locking the pressure roll in a selectedposition for exerting the proper roll pressure on the stock to beprinted.

Another object of the invention resides in the provision of a pressureroll locking means which is manipulated by relative movement of a handleor grip member which is utilized for advancing the carriage supportingthe roll over the stock to be printed.

Still another object of the invention is the provision of an indexibleeccentric means providing an abutment for positioning a pressure roll,the indexing means being provided with suitable calibrations orgraduations indicating various thicknesses of stock to be printed andthe pressure roll positioned by the indexible means to provide theproper roll pressure in accordance with the thickness of the stock to beprinted.

Further objects and advantages are within the scope of this inventionsuch as relate to the arrangement, operation and function of the relatedelements of the structure, to various details of construction and tocombinations of parts, elements per se, and to economies of manufactureand numerous other features as will be apparent from a consideration ofthe specification and drawing of a form of the invention, which may bepreferred, in which:

FIGURE 1 is a perspective View of a card printing machine embodying theinvention;

FIGURE 2 is an end view of the machine illustrated in FIGURE 1;

FIGURE 3 is a side elevational view of the carriage of the inventionwith a cover member enclosing a portion of the mechanism being shown insection;

FIGURE 4 is a top plan view of a portion of the carriage with certainparts illustrated in section;

FIGURE 5 is a sectional view taken substantially on the line 5-5 ofFIGURE 4;

FIGURE 6 is a fragmentary detail view illustrating the position ofcertain components of the construction in effecting printing oncomparatively thick multi-ply stock;

FIGURE 7 is a fragmentary detail sectional view taken substantially onthe line 77 of FIGURE 2, and

FIGURE 8 is a detail sectional view of the card of stock retainingmeans.

Referring to the drawings in detail and initially to FIGURES 1 and 2,the printing apparatus or machine is inclusive of a type supporting bedor platen 10 of planar "ice character upon which types 12 may bepositioned and held in printing position by any suitable means as bytype retaining bars, pressure sensitive adhesive or magnetic means. Itis to be understood that the types 12 may be arranged in any position onthe bed 10. The type supporting portion of the bed 10 may be equippedwith a removable resinous plastic sheet bearing type positioning linesas shown in FIGURE 1. A coating of bees wax may be applied to thetype-engaging surface of the plastic sheet to minimize slippage of thetype. The type supporting bed is mounted by channel-shaped side framemembers 14 extending longitudinally of the bed 10 and secured thereto bysuitable means.

As shown in FIGURE 1, the region between the longitudinally extendingframe members 14 beneath the bed 10 may be utilized to accommodate typestorage drawers 16. The side edge regions 18 of the bed 10 extend beyondthe channel-shaped members 14 providing tracks or ways adapted tosupport a movable carriage 22. The carriage comprises a frame structureembodying plates or members 24 which are secured in spaced relation by atransverse extending bar 26 secured to the plates 24 by means of screws27 or other suitable securing means.

Journaled upon stub shafts 28 carried by each of the plates 24 areflanged rollers 30, the rollers 30 being arranged in pairs, one pairbeing carried by each of the plates 24. The rollers 30 engage the edgeregions of the bed 10 whereby the carriage is reciprocable lengthwise ofthe bed 10. Disposed beneath each of the rollers 30 is a roller 32journally supported upon a shaft 34, the rollers 32 being disposed toengage lower surfaces of the pro jected edge regions 18 of the bed 10 inthe manner shown in FIGURES 2 and 3 in order to prevent upward relativemovement of the carriage 22. V

The shafts 34 upon which the rollers 32 are mounted have threadedportions accommodating securing nuts 35 whereby the rollers 32 areremovably secured to the plates 24. It will be obvious that the groupsof rollers 32 provide for unimpeded movement of the carriage 22lengthwise of the type supporting bed 10 and prevent verticaldisplacement of the carriage relative to the bed.

Means is provided for removably retaining individual cards or sheets ofstock in a position to be printed from types 12 disposed on the bed 10.Extending transversely of the bed 10 is a bar 38 secured in place byscrews 39 at an end region of the apparatus as shown in FIGURES 2. and8. The bar 38 is provided with ear portions 39 which accommodate journalpins or stub shafts 40. Disposed adjacent the bar 38 is a plate-likemember 42 disposed coextensively with the bar 38 and having dependinglugs 43 provided with openings to receive the pins 40 whereby the plate42 is pivotally supported for movement relative to the bar 38.

Expansion coil springs 44 are arranged to exert a biasing force on theplate 42 for urging the plate in a clockwise direction about the axis ofthe pins 40. The upper surface 46 of bar 38 and a lower planar surface48 of the pivoted plate 42 provide jaws or holding means forfrictionally gripping a card or sheet of stock to be printed during aprinting operation. The member 38 is formed 'with a raised portion 47forming a stop means for positioning a card to be printed. A hand gripor handle member 49 extends from the plate 42 to facilitate manipulationof the plate. By pivotal movement of the plate 42 relative to the bar38, successive sheets of stock or cards may be readily inserted forprinting and quickly removed.

The carriage 22 is equipped with a pressure roll 55 journally supportedby means adaptable for adjusting the position of the roll which engagesthe stock or card to be printed in order to provide a desired anduniform pressure eifective during printing operations so as to attainuniform type impressions on the cards or stock.

The pressure roll 55 preferably comprises a comparatively thick rubbersleeve or envelope 57 which is snugly fitted over a circularcylindrically-shaped bar or cylinder 58, the sleeve 57 being of a lengthto span the width of the type supporting area of the bed 10.

The pressure roll 55 is supported upon a relatively movable supplementalframe carried by the plates 24 of the carriage 22. Disposed adjacenteach end of the pressure roll 55 is a plate or member 60. The plates 60are fixedly joined together and held in spaced relation by means of aspacer member or bar 62 securely held to the plates 60 by means ofscrews 63. Each of the frame plates 24 is provided with a bore toaccommodate a pintle or journal pin 64 carried by each of the plates 60whereby the supplemental frame provided by the plates 60 and the bar 62is mounted for pivotal movement about the axes of the journal pins 64.

As particularly shown in FIGURE 5, the axes of the journal pins 64 arespaced from the axis of the pressure roll 55 whereby movement of theplates 60 about the pins 64 effects vertical movement of the pressureroll 55 relative to the type supporting bed 10. The cylinder 58supporting the rubber sleeve 57 is formed at its end regions with tenons66 which are mounted in anti-friction ,or ball bearings 68 carried insuitable bores provided in the plates 60 whereby the pressure roll 55 isfreely rotatable in the bearings 68.

The arrangement is inclusive of adjustable or indexible means forcontrolling or regulating the extent of pivotal movement of the plates60 and hence the relative vertical position of the pressure roll 55 soas to accommodate cards or sheets of stock of ditferent thicknesses.Each of the frame plates 24 is provided with an opening to receive ashaft 70. Mounted upon the shaft 70 are abutment members 72 which, inthe embodiment illustrated, are of cylindrical shape and are mountedeccentrically on the shaft 70 and secured thereto by set screws 74.

'One end of the shaft 70 extends exteriorly of one of the frame plates24 and secured to the extending portion is a hub 76 of a crank arm 78particularly shown in FIGURES 1, 3 and 7. The crank arm is secured tothe shaft 70 by means of a set screw 77. A forwardly extending portion80 of the crank arm is bored to accommodate an indexing member or pin82, an abutment or collar 81 fixed on the pin and an expansive coilspring or resilient means 83.

The pin 82 is longitudinally slidable and for this purpose is providedwith a finger grip or knob 84 having a bore which is threaded to bereceived upon a threaded portion 86 of the pin 82 extending beyond theportion 80 of the crank arm 78. Mounted upon the frontal face of theplate 24 adjacent the crank arm 78 is a circular disk-like member orplate 88 secured by any suitable means to the adjacent plate 24. I

The circular disk 88 is formed at its peripheral region with a pluralityof recesses or openings 90, each opening being of a dimension toslidably accommodate the portion of the pin 82 which is normally biasedto the position shown in FIGURE 7 under the influence of the spring 83.

The openings 90 in the member 88 are arranged in a circle, each openingbeing the same radial distance from the axis of the shaft 70 wherebyeach of the openings is adapted to selectively accommodate the pin 82dependent upon the position of the crank arm 78. The pin 82 may bemanipulated by means of the knob 84 to register the pin with any openingof the series. Each of the arms 60 is formed with an abutment surface 92which is adapted to engage the peripheral surfaces of the eccentricmembers 72 mounted on the shaft 70.

Thus rotational adjustment of the crank arm 78 and shaft 70 changes theposition of the eccentrics 72 on the shaft 70 so asto affect a change inthe position of the arms 60 which are rotatable'about the axis of thestub shafts or pins 64. A relative change in the position of rotation ofthe arms 60 about the axis of the shaft 64 changes the vertical positionof the pressure roll 55 with respect to the types 12 mountedupon theplaten or bed plate 10.

Through this adjustment, the relative position of the pressure rollaccommodates stock, designated S in FIG- URE 5, of various thicknessesso that a uniform pressure of the roll 55 may be maintained on eachsuccessive card or sheet of stock as it is being printed.

FIGURE 5 illustrates a position of the pressure roller 55 and theeccentrics 72 where a card or sheet of stock S of a double ply is to beprinted. FIGURE 6 illus-' trates another adjustment or setting for theeccentrics 72 whereby a thicker card, for example, a four ply stockdesignated S may be printed.

As shown in FIGURE 3 the outer face of the frame plate 24 may beprovided .with a chart 94 adjacent the disk-like member 88 provided withdesignations of different thicknesses of stock specified by the numberof plies as, for example, a two ply or four ply card or sheet. Throughthe use of such chart, the operator is enabled to select the properopening of the series of openings to receive the pin 82 which providesan adjusted position of the eccentric members 72 and pressure roll 55for the stock of selected thickness.

The arrangement of the invention is provided with a manipulatable handlemeans movable to a position for locking the arms 60 in engagement withthe eccentrics 72 in order to maintain the pressure roll 55 in the samerelative position during each successive printing operation of a card orsheet. Each of the members 60 supports a friction locking or latchingmeans engageable with a curved exterior surface 1000f each of the endplates 24, each of the curved surfaces being generated as a radius aboutthe axes of the pins 64 upon which the arms 66 are .journaled forpivotal movement.

As the locking or latching means carried by each of the members 60 is ofidentical construction, a description of one will suffice for both. Thedistal end regions of each of the arms 60 is bored to accommodate theend regions of a shaft 104 which is journaled in the bores in themembers 60 for rotational movement. As shown in FIGURE 4, the centralregion of the shaft 104 is formed with a portion .106 of enlargeddiameter of a dimension to snugly receive a tubular member or sleeve 106forming a manipulating handle for reciprocating the carriageconstruction and which, upon rotational movement effects a locking ofthe arms 60 in an adjusted position determined by the position of theeccentric members 72.

The sleeve or handle member 108 may be secured to the central enlargedregion 106 of shaft .104.by suitable means (not shown) as for example aset screw. Surrounding each of the portions of the shaft104adjacent anend of the central enlarged section 106 is a .coilspring 110 having oneend 111 anchored in :the adjacent .arm 60, and the other end anchored toa pin 112.carried by the shaft 104, one of the springs being shown inFIGURE 4.

Each of the arms 60 is provided with a pinor stub shaft '114 which maybe pressed into a suitable bore formed in the member 60. Pivotallysupported upon each of the pins 114 is a latching or locking shoeormember 116. Each of the members 116 isprovided with a slot 118 intowhich projects a portion 1200f a member 122. The portion .120 and thebifurcated lportions defining the slot 118 of member 116 are formed withregistering openings to accommodate a pin 124 which is pressed into andsnugly received by the openings in the member 116.

The tenon portion of member 122 is threaded and'is received 'in athreaded bore "formed in .arnembe'r or connector 126. 'Each member 126is provided with a bore adapted to receive a pin128 projecting from eachend of the shaft 104, one of such constructions being illus trated indetail in FIGURE 4. The pins 128 projecting from the shaft 104 aredisposed laterally at a distance from the axis of shaft 104 so that uponrotation of the shaft 104 by manipulation of the handle or sleeve 108,the shaft is rotated and the eccentrically disposed pins 128 effectrelative movement of the connectors 126 and members 122 causingoscillation or pivotal movement of the looking or latching members 116journally supported upon the pins 114.

Each of the members 116 is provided with a locking or friction clutchsurface 130 which, upon rotation of the hand grip or sleeve 108 andshaft 104, engages the surface 130 of each shoe 116 with the curvedsurface 100 formed on each of the frame plates 24. Through this meansthe arms 60 and the pressure roller 55 are held in relatively fixedpositions during longitudinal movement of the carriage in effecting aprinting operation.

The springs 110 exert a biasing force on the shaft 104 and thecomponents connected therewith in a direction to normally hold ormaintain the latching or clutch members 116 out of engagement with thecurved surfaces 100 of the plates 24. Members 122 are threaded into theconnectors 126 whereby through relative rotation of a member 126 withrespect to its adjacent member 122, the positions of the locking orlatching members 116 may be adjusted so that each member 116 effectivelyengages the curved surface 100 of the adjacent plate 24 duringrotational movement of the handle 108 toward locking position.

The adjustment may be affected by removing the members 116 and theconnectors 126 from the pins 114 and 128 respectively. One of the arms60 is provided with an abutment or stop pin '134 to limit the upwardmovement of one of the members 116 and, through the medium of the shaft104 and the associated components, also limits the upward movement ofthe other latching member 116. The members 116, 122 and 126 of eachlocking or latching assembly is enclosed in a sheet metal closure or cap136 secured to each of the arms 60 by means of screws 138.

The central region 109 of the handle or sleeve 108 may be knurled asshown in FIGURE 2 to provide a roughened hand grip portion. It is to beunderstood that the handle member 108 may be of a diameter or size toprovide a convenient hand grip portion for manipulating the carriagelongitudinally of the printing bed and for actuating the latch orlocking means 116.

The operation of the arrangement as illustrated in the drawings is asfollows: With the movable carriage preferably disposed at the left-handend of the printing bed 10 as shown in FIGURE 1, the operator withdrawsthe knob 84 outwardly of the crank arm 78 to withdraw the pin '82 fromengagement with an opening in the group of openings 90. The operatorthen rotates the crank arm 78 and shaft 70' to a position with the pin82 in registration with an opening 90 of the group of openingscorresponding to the ply or thickness of the card or stock as indicatedon the chart 94, on which printing operations are to be performed. 1 Theoperator then releases the knob 84 and the spring 83 moves the pin 82into the selected opening to maintain the eccentric member 72 in theselected position. The handle member 108 is moved to the broken lineposition illustrated in FIGURE 1 which movement rotates the arms 60about the axes of the pins 64 to elevate the pressure roll 55 to itsuppermost position. With the pressure roll 55 thus elevated asubstantial distance above the types 12, the end region of a card orsheet of the stock may be inserted beneath the roll 55 from the rightend of the machine, and the end of the card to be printed is abuttedagainst the stop member 47 and the card clipped between the jaws 46 and48 of the stock positioning means.

Downward pressure on the handle 49 rocks the member 42 about the axis ofshaft 43 separatingthejaws 46 and 48 to receive the card or stock. Thespring 44 biases the jaw or member 42 toward the jaw 46 to frictionallyhold the stock in a position for printing. When no rotative force isexerted upon the handle or sleeve 108, the locking members or shoes 116,under the influence of the biasing springs 110, are held out ofengagement with the curved surfaces of the plates 24.

After the card or sheet of stock is positioned by the retaining jaws 46and 48, the operator grasps the handle 108 and swings the handle andarms 60 in a clockwise direction as viewed in FIGURES 1 and 5, until thesurfaces 92 of the arms 60 engage the periphery of each of the eccentricmembers 72, the eccentric members thereby positioning the roll 55 withrespect to the card or stock. The pressure roll is then in a position toexert the required downward pressure upon the card to effect printing.

With the arms, 60 in such position, the operator rotates the hand gripor sleeve 108 relative to the arms 60, which, through the medium of theconnectors 26 and the members 122, rotates each of the latching membersor clutch shoes 116 about the pins or shafts 114 to bring the frictionor clutch surface 130 of each shoe into engagement with the adjacentcurved surface 100 of the plate 24. This action of bringing the members,1116 into frictional latching or locking engagement with the plates 24locks the arms 60 in a fixed position to maintain the pressure roll 55in proper contact with the card or sheet of stock to be printed.

The operator then moves [the carriage through his grasp of the hand grip108 in a right-hand direction as viewed in FIGURE 1 lengthwise of theprinting bed 10. During movement of the carriage, the pressure roll 55rotates over the reverse side of the stock S and exerts suflicientdownward pressure upon the card or stock to cause impression of thetypes which have been properly inked on the obverse side of the. card.When the carriage has been moved the full length of the printing bed toeffect a printing operation, the operator releases his grasp upon thehandle or sleeve 108 and under the influence of the springs 110 thelocking members "116 are automatically moved out of frictional orlocking en gagement with the plates 24. The operator then swings thearms 60 in a counterclockwise direction as viewed in FIGURES 1 and 5about the axes of the shafts 64, which movement elevates the pressureroll 55 to a position above and out of contact with the printed card andthe carriage then moved in the reverse or retracted direction toward theleft-hand end of the bed 10 as viewed in FIGURE 1.

The handle 49 of the stock gripping means may then be depressed and theprinted card removed from the jaws 46 and 48 of the stock retainingmeans. This operation is repeated for each sheet to be printed.

Through the arrangement of the invention, the effective pressure to beexerted by the pressure roll 55 may be adjusted for each thickness ofcard to be printed and, through the locking arrangement for the pressureroll 55, a uniform pressure is exerted upon each card of preselectedthickness on which a printing operation is to be performed. It is alsoapparent that the apparatus may be readily adjusted for cards or stockof different thicknesses simply by manipulation of the knob 84 and thecrank arm 78 to change the positions of the abutments or eccentricmembers 72 which, in turn, determines the relative position of the roll55. The types 12 on the printing bed 10 are inked by means of a handroller in the conventional manner between each printing operation.

It is apparent that, within the scope of the invention, modificationsand different arrangements may be made other than as herein disclosed,and the present disclosure is illustrative merely, the inventioncomprehending all variations thereof.

We claim:

1. Apparatus of the character disclosed, in combination, a bed adaptedto support printing type, a carriage movable longitudinally of the bed,means disposed at an end region of the bed to removably secure a sheetto be printed, a frame structure pivotally mounted on said carriage, apressure roll rotatably journaled on said frame structure, a relativelymovable abutment supported by said carriage adapted to limit the pivotalmovement of said frame structure in one direction, means for adjustingthe relative position of said abutment, a relatively movable hand gripmember carried by said frame structure, friction shoes movably supportedon said frame and operable by relative movement of the hand grip memberinto engagement with the carriage for locking said frame structureagainst movement relative to said carriage, and means normally biasingsaid friction shoes out of engagement with the carriage.

2. In a card printing machine, a printing bed, a carriage movablelongitudinally of said bed, a card clamp mounted at one end of theprinting bed, a pressure roll, a frame pivotally mounted on saidcarriage, said pressure roll being journaled on said frame, the pivotalaxis of said frame being spaced from the axis of said pressure rollwhereby pivotal movement of said frame changes the vertical position ofthe pressure roll with respect to the printing bed, a handle movablysupported on said frame, cam means mounted on said carriage, means foradjusting said cam means to selected positions, said cam means beingarranged to be engaged by the frame to determine the position of thepressure roll,

a locking shoe supported on each end of said frame and engageable withthe carriage to prevent vertical displacement of the pressure rollduring a printing operation, and means connecting said locking shoeswith said handle whereby rotative movement of the handle actuates saidlocking shoes to frame locking position.

3. In a card printing machine, a printing bed, a carriage movablelongitudinally of said bed, a card clamp mounted at one end of theprinting bed, a pressure roll, a frame pivotally mounted on saidcarriage, said pressure roll being journaled on said frame, the pivotalaxis of said frame being spaced from the axis of said pressure rollwhereby pivotal movement of said frame changes the vertical position ofthe pressure roll with respect to the printing bed, a handle rotatablysupported on said frame, a shaft journaled on said carriage, cam meansmounted on said shaft, means for indexing said shaft to selectedpositions to vary the position of said cam means, said cam means adaptedto be engaged by said frame for determining the position of the pressureroll, locking shoes associated with said frame and engageable with thecarriage to prevent vertical displacement of the pressure roll during aprinting operation, means connecting said locking shoes with said handlewhereby rotative movement of the handle actuates said locking shoes tolocking position, and resilient means arranged to normally bias saidlocking shoes out of engagement with the carriage.

4. In a card printing machine, a printing bed, a carriage movablelongitudinally of said bed, a card clamp mounted at one end of theprinting bed, a pressure roll, a frame pivotally mounted on saidcarriage, said pressure roll being journaled on said frame, the pivotalaxis of said frame being spaced from the axis of said pressure rollwhereby pivotal movement of said frame changes the vertical position ofthe pressure roll with re spect to the printing bed, a shaft journaledon said frame, a handle supported on said shaft for rotating the shaft,a second shaft journaled on said carriage, cam means mounted on saidsecond shaft, means for indexing said second shaft to selected positionsto vary the position of said cam means, said cam means adapted to beengaged by said frame for determining the position of the pressure roll,locking shoes associated with said frame and engageable with thecarriage to prevent vertical displacement of the pressure roll during aprinting operation, means connecting said locking shoes with said firstmentioned shaft at regions spaced from the axis of rotation thereofwhereby rotative movement of the handle controls the position of saidlocking shoes.

5. In a card printing machine, a printing bed, a carriage movablelongitudinally of said bed, a card clamp mounted at one end of theprinting bed, said carriage including spaced side plates, connectingmeans joined to the side plates, a frame comprising a pair of arms, amember securing said arms in spaced relation, said arms being pivotallymounted on said side plates, a pressure roll journaled on said frame onan axis spaced from the pivotal axis of said arms, a hand grip memberrotatably supported by said arms, a shaft journaled by said side plates,eccentric members mounted on said shaft, means for rotating the saidshaft to vary the position of the eccentric members, said eccentricmembers arranged to be engaged by said arms to determine the position ofthe pressure roll in accordance with the thickness of the card to beprinted, and locking means on said frame engageable with the carriageand operable by said hand grip member for maintaining said arms inengagement with said eccentric members during printing operations.

6. In a card printing machine, a printing bed, a carriage movablelongitudinally of said bed, a card clamp mounted at one end of theprinting bed, said carriage including spaced side plates and a barjoined with said plates, a frame comprising a pair of arms, a membersecuring said arms in spaced relation, said arms being pivotally mountedon said side plates, a pressure roll journaled on said frame on an axisspaced from the pivotal axis of said arms, a first shaft journallysupported on said arms, a hand grip element carried by said first shaft,a second shaft journaled by said side plates, eccentrics mounted on saidsecond shaft, a crank on said second shaft movable to selected positionsto change the positions of said eccentrics, an indexing pin carried bysaid crank cooperating with means for maintaining said crank in selectedpositions, said eccentrics arranged to be engaged by said arms todetermine the position of the pressure roll in accordance with thethickness of the card to be printed, locking shoes arranged to engagethe side plates for locking the arms of the frame in engagement with theeccentrics, means connecting the locking shoes with the first shaftwhereby rotation of the first shaft aotuates the locking shoes.

7. In a card printing machine, a printing bed, a carriage movablelongitudinally of said bed, a card clamp mounted at one end of theprinting bed, said carriage including spaced side plates and a barsecured to said plates, a frame comprising a pair of arms, a membersecuring said arms in spaced relation, said arms being pivotally mountedon said side plates, a pressure roll journaled on said frame on an axisspaced from the pivotal axis of said arms, a hand grip element journallysupported by said arms, a shaft journaled by said side plates,eccentrics mounted on said shaft, a crank on said shaft, means mountedon one of said side plates provided with a plurality of openings, anindexing pin carried by said crank for selective engagement in saidopenings for adjusting the position of said eccentrics, said eccentricsarranged to be engaged by said arms to determine the position of thepressure roll in accordance with the thickness of the card to beprinted, locking shoes movably mounted on said arms and arranged tofrictionally engage the side plates for locking said frame with the armsin engagement with the eccentrics, means connecting the locking shoeswith the hand grip element whereby rotation of the element actuates thelocking shoes, and spring means for normally biasing the hand gripelement in one direction of rotation.

riage movable longitudinally of said bed, a card clamp mounted at oneend of the printing bed, said carriage including spaced side plates anda bar joining said plates, a frame comprising a pair of arms, a membersecuring said arms in spaced relation, said arms being pivotally mountedon said side plates, a pressure roll journaled on said frame on an axisspaced from the pivotal axis of said arms, a first shaft journallysupported on said arms, a hand grip sleeve carried by said first shaft,a second shaft journaled by said side plates, eccentric members mountedon said second shaft, a crank on said second shaft, means mounted on oneof said side plates provided with a plurality of openings, an indexingpin carried by said crank for selective engagement in said openings foradjusting the position of said eccentrics, said eccentrics arranged tobe engaged by said arms to determine the position of the pressure rollin accordance with the thickness of the card to be printed, lockingshoes pivotally mounted on said arms and arranged to frictionally engagethe side plates for locking said frame with the arms in engagement Withthe eccentrics, means connecting the locking shoes with the first shaftwhereby rotation of the first shaft actuates the locking shoes, andspring means associated with said first shaft for normally biasing saidshoes toward frame releasing position.

References Cited in the file of this patent UNITED STATES FATENTS1,523,736 Wagner Jan. 20, 1925 2,818,072 Lamb et al. Oct. 22, 19352,034,584 Lamb Mar. 17, 1936 2,057,843 Oliver Oct, 26, 1936 2,068,707R-eardon Jan. 26, 1937

